312-49 · Question #391
A packet is sent to a router that does not have the packet destination address in its route table, how will the packet get to its properA packet is sent to a router that does not have the packet?…
The correct answer is C. Gateway of last resort. When a router receives a packet for a destination not listed in its routing table, it forwards the packet to the 'gateway of last resort,' also known as the default route (typically configured as 0.0.0.0/0). This default gateway acts as a fallback forwarding path for all…
Question
A packet is sent to a router that does not have the packet destination address in its route table, how will the packet get to its properA packet is sent to a router that does not have the packet? destination address in its route table, how will the packet get to its proper destination?
Options
- ABorder Gateway Protocol
- BRoot Internet servers
- CGateway of last resort
- DReverse DNS
How the community answered
(51 responses)- A4% (2)
- C94% (48)
- D2% (1)
Explanation
When a router receives a packet for a destination not listed in its routing table, it forwards the packet to the 'gateway of last resort,' also known as the default route (typically configured as 0.0.0.0/0). This default gateway acts as a fallback forwarding path for all unknown destinations, preventing packets from being silently dropped. BGP handles inter-AS routing, root servers resolve DNS, and reverse DNS maps IPs to hostnames-none of these directly solve the missing-route problem.
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